Ghost Recon Series — Archive & Audio Formats

Source: XeNTaX forum knowledge extraction (2005–2018). Covers Ghost Recon 2 (Unreal), GRAW (Yeti/GEAR), GRAW PS2, GRAW Xbox 360, Ghost Recon Future Soldier.

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1. Ghost Recon 2 (Unreal Engine)

Uses the Unreal Engine. As of 2005, MexCom (MultiEx) could not handle these files.

• Contact: WATTO (watto@watto.org)

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2. GRAW (PC) — *.bundle (Yeti/GEAR)

GRAW (PC) uses .bundle files with an XMB-based structure similar to Ensemble Studios (Age of Empires).

.bundle File Format

Header:

DWORD: Header // "BNDL"
DWORD: Version // 0x02
ULONG: TOC size // e.g. 0x021F6

TOC Markers:

Marker	Meaning
01	file name
0101	directory
02	file info
03	move to parent dir

Entry Layout:

string filename = data/anims/ghost/ghost_machine.xmb
ulong offset = 0x021cbdfc
DWORD filesize = 0x0703D82

Example TOC Hex:

00000010 0101 6461 7461 0001 0161 6E69 6D73 0001 ..data...anims..
00000020 0167 686F 7374 0002 FCBD 1C02 0000 0000 .ghost..........
00000030 823D 7000 0167 686F 7374 5F6D 6163 6869 .=p..ghost_machi
00000040 6E65 2E78 6D62 00 ne.xmb.

(0101 = dir "data", 01 = "anims", 01 = "ghost", 02 = file info, then filename + offset + filesize)

000001C5 0301 0167 7569 0002 308A 2E01 0000 0000 ...gui..0.......
000001D5 52D7 0200 0161 6C65 7274 2E78 6D62 00 R....alert.xmb.

(03 0101 = go to parent dir and enter gui)

.bundle Tools

Tool	Purpose	Notes
GRAWbundle-reader v1.0	*.bundle unpacker	KorNet, 2007
itg's tool	extraction + packing	Repacking patch.bundle works; game loads fine after repack

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3. GRAW (PS2) — *.PKG Archives & IMG Containers

PS2 IMG/Container Script (aluigi, 2010)

Header: FULLSIZE, OFFSET1, INFO_OFF, OFFSET3, NAMES_OFF, BASE_OFF. Number of files = (OFFSET3 - INFO_OFF) / 0x30. Each entry = 0x30 bytes:

Offset	Type	Field
+0x00	long	NAME_OFF (relative to NAMES_OFF)
+0x04	long	CURR_ID
+0x08	long	PREV_ID (0 = leaf/full name)
+0x0C	long	NEXT_ID
+0x10	long	DUMMY4
+0x14	long	TYPE
+0x18	long	ZSIZE
+0x1C	long	SIZE
+0x20	long	OFFSET
+0x24..0x2C	long	DUMMY6/7/8

Filenames reconstructed from linked-list via PREV_ID (each node prepends its name to child path). If ZSIZE == SIZE → file stored raw, else clog (compressed).

GRAW PS2 *.PKG Script (AlphaTwentyThree, 2010)

# extracts the PKG archives used in
# Ghost Recon: Advanced Warfighter (PS2)
# (c) 2010 by AlphaTwentyThree of Xentax

get DATASTART long
get FILES long

for i = 1 <= FILES
 savepos POS
 get NAMEPOS long
 math NAMEPOS + POS
 get OFFSET long
 savepos POS

 goto NAMEPOS
 getdstring NAME 0x40
 goto POS

 if i == FILES
 get SIZE asize
 else
 get DUMMY long
 get SIZE long
 endif
 math SIZE - OFFSET
 log NAME OFFSET SIZE

 goto POS
next i

• Header: DATASTART (long) + FILES (long)
• Per entry: NAMEPOS (relative to current pos) then OFFSET; filename = fixed 0x40-byte string
• Size computed as next offset minus current

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4. GRAW (Xbox 360) — Audio

Xbox version audio is xbadpcm (Xbox ADPCM).

Tools

• Luigi's Xbox ADPCM decoder (xbadpdec.exe): http://aluigi.org/papers.htm#xbox

Container Structure

• Several tracks separated by zero blocks — no header inside container
• Must find correct stream start manually:
• First file offset 0, second offset 0x4B800 (Kataah, 2010)
• xbadpdec.exe mp_01_nl.SS2 stream.wav (all tracks need correct start)

PS2 Audio

• Audio is PS2 ADPCM, not .vox
• Track offsets need manual locating (e.g., 0x227810 for next track)
• Issue: Streams can be "scratched" (interleave change ~3.5s before end of each decoded PS2 stream) (AlphaTwentyThree, 2010)

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5. Ghost Recon Future Soldier — Yeti/GEAR BIG Archives

GRFS uses Yeti Engine (GEAR BigFile) archives.

Yeti Engine (GEAR BigFile) Script (Ekey, 2012)

# Yeti Engine (GEAR BigFile)
# script for QuickBMS http://quickbms.aluigi.org

idstring "[ GEAR BigFile ]"
get DUMMY long
get DUMMY long
get FILES long
get DUMMY long

savepos OFFSET_OFF
for i = 0 < FILES
 get DUMMY long
 get DUMMY long
next i

savepos SIZE_OFF
for i = 0 < FILES
 get DUMMY long
next i

savepos CRC_OFF # crc of the filenames?
for i = 0 < FILES
 get DUMMY long
next i

savepos DUMMY_OFF
for i = 0 < FILES
 get DUMMY string # or byte?
next i

for i = 0 < FILES
 goto OFFSET_OFF
 get OFFSET long
 get OFFSET64 long
 savepos OFFSET_OFF

 goto SIZE_OFF
 get SIZE long
 savepos SIZE_OFF

 goto CRC_OFF
 get CRC long
 savepos CRC_OFF

 string CRC p= "%08x" CRC
 log CRC OFFSET SIZE
next i

• Magic: [ GEAR BigFile ] (with brackets)
• Filenames are hashed (CRC32); the .report file gives original names
• Works with files in Sound_Bin_PC folder
• For main-dir archives, change idstring to "YBIG"

YBIG / Multi-part BIG Archives

Script	URL	Notes
yeti2.bms	aluigi.org/papers/bms/yeti2.bms	For YBIG, reported incomplete/broken (extracts 1KB files)
yeti_gear.bms	aluigi.org/papers/bms/yeti_gear.bms
yeti_ybig.bms	aluigi.org/papers/bms/yeti_ybig.bms	Fixed 2013-03-17: non-compressed files don't have SIZE field; output files have no extensions

Manual Multi-part Merge Workaround (GRiNDERKILLER, 2018)

For GRFS 1.8 (non-Steam), Yeti.big, Yeti.big1, Yeti.big2, Yeti.big3 can be merged:

1. Open Yeti.big → go to byte offset 1487572640 (hex 0x58AA8EA0)
2. Yeti.big1: remove first 65536 bytes, paste rest at that offset
3. Yeti.big2: remove first 65536 bytes, paste at 2975102352 (0xB1547590)
4. Yeti.big3: remove first 65536 bytes, paste at 4463445720 (0x10A0AC6D8)
5. Save as Yeti_1.big and use BMS script to unpack
6. Expected total size: 5,896,484,568 bytes (else wrong version)

Multi-part BIG scheme splits archive into 64KB-chunked continuation files (Yeti.big1–3 are 65536-byte-aligned continuation chunks).

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6. Tools Reference

Tool	Purpose	Author
GRAWbundle-reader v1.0	*.bundle unpacker	KorNet
itg's bundle tool	bundle extract + repack	itg
MexCom (MultiEx)	General archives (can't do GR2 Unreal)	WATTO
QuickBMS + scripts	GRAW PS2 PKG/IMG, GRFS BIG	aluigi / AlphaTwentyThree
xbadpdec.exe	Xbox ADPCM decode	Luigi Auriemma
yeti2.bms / yeti_gear.bms / yeti_ybig.bms	Yeti BIG extraction	Luigi Auriemma

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Key Facts Summary

• Ghost Recon 2: Unreal engine (MexCom unsupported as of 2005)
• GRAW PC: .bundle archives, XMB TOC structure, magic BNDL v0x02
• GRAW PS2: .PKG archives (0x40-char names, DATASTART/FILES header) and IMG containers with 0x30-byte linked-list entries
• GRAW Xbox 360: audio = xbadpcm, track-separated by zero blocks, no header
• GRFS: Yeti/GEAR BigFile — [ GEAR BigFile ] and YBIG magics, CRC32 filenames, multi-part BIG1–3 chunks (65536-byte alignment)